Copy settings from one particle system to another
If you can do some python. 
Traverse all the objects and then traverse all the modifier of this object, if the modifer is a subsurf set the modifier correctly. 

for ob in bpy.data.objects:
    for m in ob.modifiers:
        if m.type == "SUBSURF":
            ob.cycles.use_adaptive_subdivision = True
            ob.cycles.dicing_rate = 3
            ....


And do the same for the particule system:

for ob in bpy.data.object:
    for psys in ob.particle_systems: 
        psys.use_hair_bspline = True
        psys.render_step = 5
        psys.adaptive_angle = 2
        psys.adaptive_pixel = 3